How long does it take to fill out a winning NCAA bracket? Sam Holtz, a sixth grader from north suburban Lake Zurich, took only five minutes to fill out his.

"I just rushed right through it. I think it was kind of all skill. Some people say it's luck, but I think I studied enough," Sam said.

Sam, 12, and a group of friends watched eagerly for the outcome of Monday night's Duke-Wisconsin game, knowing a Blue Devils' win would catapult him to a tie for first place among 11.57 million entries in ESPN.com's bracket challenge.